Oil-well jack.



No. 840,374. PATENTED JAN. 1, 1907. J. W. 'RHOADES.

OIL WELL JACK.

APPLIUATION FILED JULY 16. 1906.

A TTOR/VE Y5 "ness of the'frame andthe proper adjustm UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Jan. 1,-1907.

"Application'filed luly 16, 1906. Serial No. 326,479.

To aZZ whom it may concern.-

.fBe .it known "that .1, JAMES WILLIAM RHoAnEs, a citizen of the United'States, re-

siding at Fostoria, in the county of Seneca and State of Ohio, haveinvented'a new and useful Oil-Well Jack, of which the viollowing isaspecification.

This invention relates to oil-well jacks. The object of the invention is to provide improved means foranchoring the supportciated parts may be vadjusted vertically, thereby to regulate the length of dipof the polish-rod.

A further object ofthe invention is to generallyimprove this class of devices,-so as to increase their utility, durability, and efficiency. Withthese and'other objects in view the invention consists .in the construction and novel combination and arrangement of parts hereinafter fully described, and illustrated in the accompanying drawmgs.

Inthe accompanying drawings, forming a partof this specification, Figure 1 isa perspective view of an oil-well jack constructed in accordance with my invention. Fig. 2 is a top plan view of the-'casing-head anchor detached. Fig. 3 is a longitudinal sectional view of the coupling-block. Fig. 4 is a transverse sectional view takenon the line 4 4 of Fig. 3 with the connecting-rods and coupling-pin detached. Fig. 5 is a detail perspective view of a modified form-ofcoupling-block. Fig. 6 is a perspective view, partly in section, of the tail-block andits associated parts detached.

Similar character-s ofreference indicate corresponding parts in all of the figures of the drawings.

"In the setting'of an oil-"pumping jack the success of the 'work is measured by the firmof the stroke, through which unnecessary friction is-avoided and the desired length of dip is secured. These results are obtained in the preferred form of ack, (shown in Fig. 1 of the drawings in which C designates the ordinary casing head or well, S the-stuffing-box, and P the polish-rod, these parts being of the usual or any preferred construction.

The jack comprises a rock-beam consisting ofthe angularly-disposed arms 1 and 2, each formed of parallel bars connected at their points of intersection to a tail-block 3, the latter being provided with a clamping-nut 4 to assist in retaining the rock-beam in position on said tailblock.

The outer ends of the parallelbars forming the'arm 1 of the rock-beam are pivotally secured to a head-block 5, provided with a pair of depending links 6, the lower ends of which are operatively connected with a suitable gripping device '7, which engages the polishro'd, as shown. Secured to the lower end of the arm 2 is a coupling member or block 8,

provided with a reinforcing longitudinallydisposed strengthening rib or flange 9,6X- tending laterally from one face of the block and interposed between the parallel bars of the ar1n2 as shown.

The longitudinal rib is formed with a plurality of openings 10, the central one of which is pierced by an attaching-bolt 11, which forms a pivotal connection between the block and the arm 2 of the rock-beam-and also serves to pivotally support a pair of diagonal braces 12, the opposite ends of which aresecured to the head-block 5.

Secured tothecasing-headC is a clamping member, preferably formed in two sections 18 and 14, which embrace the casing-head,-

one of said sections being formed with laterally-extending lugs 14, which receive the threaded ends of the adjacent section and are providedwith-suitable clamping-nuts 15,

by means of whichsaid member is secured in ground, while the opposite end of the rod is threaded for engagement with a pair of clamping-nuts 22, which bear'one on each side of the yoke, and thus serve to lock the rod in adjusted position. It will thus be seen that by adjusting the rod 20 the casinghead may be moved laterally to aline the same with the stuffing-box, and thus prevent undue friction between the parts when the jack is in operation.

Secured to the opposite ends of the pin 17 is a pair of spaced diagonal brace-bars 23, the opposite ends of which are pivotally connected to the tail-block 3 and also pivotally connected to a pair of rearwardly-extending legs or supports 24. Detachably secured to the le s or supports 24 is an adjustable U- shape anchor 25, adapted to be buried or otherwise embedded in the ground, and provided with spaced arms 26, the free ends of which are clamped in engagement with the legs 24 by means of suitable clips 27. The sup ortin -legs 24 and arms 26 are provided wit a p urality of spaced openings 28, adapted to receive bolts or other similar devices 29, which serve to assist in clamping the anchor in adjusted position.

By having the rear legs of the jack adjustable the rock-beam may be raised or lowered at the tail-block, thus thrusting backward or forward the tail-block, so that the polish-rod may be maintained in a perfect perpendicular position.

The coupling member or block 8 is provided with a plurality of spaced ribs 29, having transverse recesses 30 formed therein for the reception of a coupling pin or bolt 31, to which are attached the spaced arms of the draw-bar or operating-lever 32. The outer end of the bars forming theoperating-lever are deflected laterally and united by a securing-bolt 33 and are provided with one or more perforations 34, which serve as a means of connection with a pitman-rod or other suitable means for imparting a rocking movement to said rock-beam.

Attention is called to the fact that the rear face of the block at the bolt-receiving openings 30 is inclined or beveled, as indicated at 35, so that the bolt or coupling pin 31 bears against the front and rear of the, block, the latter being referably provided. with marginal strengt ening-flanges 36, disposed one on each side of the longitudinal reinforcingrib, as shown.

By having the coupling-block formed in the manner described the bolts 11 and 31 may be adjusted vertically of the block, thereby to regulate the dip or stroke of the olish-rod, while at the same time permitting ree tilting movement of the rock-beam when the rear legs are adjusted. The bolt 11 also forms a bearing or ivotal point upon which the lower end of tlife brace 12 swings when the jack is thrown back for pulling rods.

In Fig. 5 of the drawings there is illustrated a modified form of coupling-block in which one side of the block is formed with integral perforated ears or lugs 37, adapted to receive the bolt 31, that ortion of the block adjacent the perforated ugs being concaved to form seats 38 for the reception of the bolt when the latter is placed in position on the coupling-block,

From the foregoing descri tion it will be seen that there is provide an extremely simple, inexpensive, and efiicient device ad- 'mirably adapted for the attainment of the ends in view.

Having thus described the invention, what is claimed is 1. In a pumping-jack, a tail-block, a rock-v beam associated with the tail-block, and an adjustable anchoring member operatively connected with the tail-block for tilting the rock-beam.

2. In a pumping-jack, a tail-block, a rockbeam associated therewith, an adjustable anchoring member connected with the tailblock, a cou ling member carried by one end of the rockearn, and a draw-bar one end of which is adjustable vertically of the coupling member.

3. In a pumping-jack, a tail-block, a rockbeam associated wlth the tail-block, an anchor-supporting member secured to said tailblock, and an anchor adjustably secured to the supporting member for tilting the rockbeam.

4. In a pumping jack, a tail-block, a rockbeam associated therewith, an anchor-supporting member pivotally connected with the tail-block and provided with spaced perforations, a U-shaped anchoring member adjustably mounted on the supporting member and provided with perforatlons adapted to register with the perforations in the supporting member, bolts passing through said perforations, and clips embracing the support ing and anchoring members.

5. In a pumping-jack, a tail-block, an angularly-disposed rock-beam associated with the tail-block, a con ling secured to one of the arms of the rockearn, a head-block se- 1 cured to the opposite arm of the rock-beam, a brace connecting the head-block and coupling member, a draw-bar operatively connected with the coupling member, and means for adjusting the tail-block thereby to tilt the rock-beam.

6. In a pumping-jack, a tail-block, a rockbeam provided with angularly-disposed arms, a coupling member pivotally connected with the lower end of one of said arms, a headblock secured to the free end of the opposite arm, a diagonal brace secured to the tailblock and pivotally connected with the coupling member and adjacent arm of the rockbeam, and a draw-bar associated with the coupling member. I

7. In a pumping-jack, a tail-block, a rockbeam associated with the tail-block and provided with singularly-disposed arms, an adjustable anchoring member pivotally connected with the tail-block, a coupling member secured to one of the arms of the rockbeam, and a draw-baradjusted vertically of the coupling member.

8. In a pumping-jack, a tail-block, a rockbeam associated with the tail-block and provided with angularly-disposed arms, a headblock secured to one of said arms, a coupling member secured to the opposite arm, braces pivotally connected to the head-block and coupling member, respectively, a draw-bar mounted on and adjustable vertically of the coupling member, an anchoring member, and a brace extending between the anchoring member and the tail-block.

9. In a pumping-jack, a tail-block, an angularly-disposed rock-beam associated with. the tail-block, a head-block secured to one end of the rock-beam, a coupling-block secured to the opposite end of said rock-beam and provided with spaced ribs having transverse openin s formed therein, a brace secured to the headblock and pivotally connected to the coupling-block and adjacent end of the rock-beam, respectively, a bolt engaging the openings in the couplingblock,.

in? a draw-bar pivotally mounted on the 10. In a pumping-jack the combination with a casing-head, a sectional clamp engaging said head, an anchoring member associated with said clamp, a tail-block, a rockbeam associated with the tail-block, and a brace extending between the clamping member and tail-block, respectively.

11. In a pumping-jack the combination with a casing-head, of a sectional clamp embracing the casing-head and provided with upstanding ears, a yoke pivotally mounted between said ears and provided with an anchoring member, a tail-block, a rock-beam associated with the tail-block, a brace extending between the ears of the clamping member and secured to the tailblock, a coupling member secured to one end of the rockbeam, and a draw-bar secured to and adjustable vertically of the coupling member.

12. In a pumping-jack, the combination with a casing-head, of a clamp engaging the casing-head and provided with upstanding lugs, a yoke pivotally mounted between said lugs, an adjustable anchoring-rod carried by the yoke, a tail-block, a rock-beam associated with a tail-block, a brace extending between the lugs of the clamping member and said tail-block, an adjustable anchoring member pivotally secured to the tail-block, and a draw-bar mounted on and adjustable vertically of the rock-beam.

13. In apumping-jack, a coupling member provided with a longitudinal reinforcingbar and having a plurality of transverse boltreceiving recesses formed in one face thereof.

14. In a pumping-jack, a coupling member comprising a block provided on one side thereof with a longitudinal reinforcing-bar and having its opposite face formed with spaced ribs provided with transverse recesses for the reception of a coupling-bolt, the walls of the recesses at the rear of the block being inclined or beveled. 1

15. In a pumping-jack, a coupling member comprising a block provided on one side thereof with a perforated longitudinal reinforcing-bar and spaced marginal flanges, and having its opposite face formed with parallel ribs provided with spaced transverse recesses, the adjacent face of the block at said recesses being concaved to form bearing-seats for the reception of a bolt, and the rear face of the block at said openings being'inclined in opposite directions.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

JAMES WILLIAM RHOADES.

Witnesses:

J. V. J ONES, NOAH STAHL. 

